Which of the following can cause an increase in density that result in a deep ocean current?
the sun heats the water’s surface.
warm water loses energy to its surroundings and cools.
a warm wind blows across cold water.
an iceberg melts, adding fresh water to ocean water.

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

What was darwins theory of common decent

Aremote community desperately needs more electrical energy. it is located in an area with the following characteristics: average wind speed of 15 – 20 km/hr some medium-sized rivers with slow-moving currents few coal deposits some oil exploration being conducted within 400 miles based on the above information, which energy source would be the most economical and safest for the community to pursue? a. fossil fuel b. hydroelectric c. nuclear d. wind